I have the oportunity to buy a '99 yz400f for $1500 but don't know if I'm going back too far. I currently ride a '03 YZ125 and would like to get into the four strokes since we woods and trail ride only. I have not seen the bike in person yet but the pics look good. Never been raced, adult ridden, and looks well taken care of. Is $1500 too much, will I regret a late 90's bike? I will likely sell the 125 if it works out.